Hot-air gas furnace



Aug. 10 1926.- 1,595,639

J. BEARD HOT AIR GAS FURNACE Filed July 5. 1924 Patented Aug. 10, 1926.

- UNITED "STATES JAMES BEARD, or PASADENA, oamronnrn.

'VHOT-AIR ens FURNACE.

Application filed July 5,

This invention'rela-tes to hot air furnaces in which illuminating gas is utilized for fuel.

The object of the invention is to provide a hotair furnace having a -radiator enclosed within an inner casing surrounded by an outer casing, in which air is heated by being brought into contact with the heating sur face of the radiator and inner casing.

The object is accomplished by the disclosure of the invention herein set-forth by the following description of the accompany? ing drawings in which theconstructionand advantages are-clearly set forth and the novel featuresthereof-pointed out in the appended claims.

Referring to the-drawings Figure 1 is a horizontal'section taken on the line -11 ofIFig. 2,

r Fig. 2 is a vertical section taken substantially on the line. 22 of'Fig. 1,

Fig. 3 isa section taken on the line 33 of Fig. 2, and

Fig. 4 is a tion taken on the same plane as Fig. 2, showing a modification of the upper portion of the furnace.

Referring by numerals to the accompanying drawings, 10 designates an outer casing which surrounds an inner casing 12, the up per portion of the casings 10 and 12 being joined by a top 11. The casings 10 and 12 are provided with doors 13 and 14. i

A radiator, generally designated at 15, is positioned within the casing 12 and is supported by brackets 16 which are fastened to the casing and extend under the radiator. The casings 10 and 12'are formed of thin sheet metal and rest on a base or'floor 17.

The radiator is composed of a series of parallel compartments 18, 19, 20 and 21, which are connected by passages 22, 23 and 24. A compartment 26, which is of larger size than the compartments 18 to 21 inclusive, is connected to the compartment 18 by a passage 27, and is provided with a baffle plate 28'and a bottom 29 having an opening 30 through which extends a chimney 31 of a gas heater 32. A vent chamber 33 is connected to the compartment 21 by a conduit 34 and is provided with a pipe or stack 35.

The top portion of the casing 12 is entirely enclosed by a cover 36 from which lead hot air pipes 37 Referring to Fig. 1, it willbe seen that the radiator is of zig-zag formation, there being air circulating passages 38, 39, 40 and 41 be fragmentary, horizontal sec- 1924. .Ser'ial .No. 724,460.

tween the compartments 18, 19, 20, 21 and 26; and as the radiator is smaller than the casing 12, additional air circulating space 42 is provided between the interior of the casing 10 and the exterior of the radiator 15.

Upright plates 43 and 44 support an inclined baffle plate 45. An opening 46 is provided in the casing 10 below the bottom of the radiator while oppositely disposed open ings-47 are formed in the casing 12 adjacent the heater 32. The heater 32 consists chiefly of a burner 48, a cylinder 49, a supporting stand 50 and the chimney 31, as clearly shown in Fig.2. Gas is supplied to the burner by a pipe 51 controlled by .a valve '52.

The fire is started by opening the doors 13 and 14 and the valve 52, then igniting the gas passing out of the burner 48 of the V heater 32, after which the doors are closed.

The air'to'beheated by the radiator and supplied to the heater enters the furnace through the opening46,.a portion-of which is deflected by the bafiie plate 45, and brought into contact with and preheated by the. surface-of the vent chamber 33, and then mixed with the air passing through the opening 46 in the end wall of the outer casing 10 between the plates 43 and 44. The air is then i passed between the casings 10 and 12, as indicated by the arrows 53, into the inner casing 12 through the oppositely disposed openings 47 at which time it is again pre heated by the external surface of the casing 10 adjacent the radiator.

The heat and products of combustion gen erated by the burner pass through the chimney 31 into the lower portion of the compartment 26 around the bafiie plate 28, then successively through the compartments 18, 19, 20 and 21 and passages 27, 22, 23 and 24 into the stack 35 via conduit 34 and vent chamber 33, thus heating the radiator.

The external heating surface of the radi ator will cause an upward current of air through the passages 38 to 41 (between the compartments 18, 19, 20, 21 and 26) and space 42 between the radiator and casing 10, thence into the distributing pipes 37.

From the construction it will be seen that the furnace, while simple in construction, is very eflicient as the zig-zag formation of the radiator provides considerable heating area to the preheated air, and that the heat and production of combustion from the heater pass directly through the radiation without mixing With the heated air entering the pipes 37.

The furnace is installed in the basement of a building, the pipes 37 being carried to differ nt parts of the building While the stack 35 is connected to the chimney or ex tends through the root in the usual manner.

In the form shown in Fig. 4, instead of using a plurality of pipes for transferring heat to different parts of the building as reterred to, a pipe or conduit of sutiicient size. is centrally poY'ti-oned in the cover portion 8? and exrc is through tie floor 55 of the basement into the room above, the const: ietion ot the iin'nace being the same in other respects as shown in l, 2 and I claim as m invention z- 1. it. hot air gas furnace comprising an outer casing, an inner casing Within said outer casing, said inner a d out r casing be? ing connected at their upper ends, a radiator within said inner casing; comprising a plurality of vertically mounted compartments in spaced relation, each of said coinpartments being of rectangular shape in vertical and horizontal cross section and joined by oppositely disposed passages extending from top to bottom, a vent chamber conneeted to the outer side of said inner casing, a conduit connecting; said vent chamber and a compartment of said radiator adjacent said vent chamber, a heater Within said inner casing having a chimney extending through an opening in the compartment of said radiator, directly above said heater, and a cover over said inner casing having openings therein and pipes leading therefrom.

2. A hot air furnace comprising a radiator consisting of a plurality of vertically mounted compartments in spaced relation connected by oppositely disposed passages extending from top to bottom forming a horizontal zig zag air passage, a heater having a chimney extending through an opening in the bottom of he :tor 'ard compartment at said radiator. an inner casing" enclosing said radiator and a heater having oppositely posed openings therein, below said radir ad acent said heater. a cover 6X- 1; over saio inner casing having open- V therin and pipes leading from said openings adapted to receive the air heated by said radiator, a vent chamber mounted on the outer side of said inner casing, a conduit forming a passage between the rear compartment of said radiator and said vent chamber, an outer casing surrounding said inner casing and having an air inlet therein below and adjacent said vent chamber, said outer and inner casings being joined at their upper ends and a stack extending upwardly from saio vent chamber through an opening v in the top of said outer casin in testimony whereof I have signed my nan'ie to this specification.

Janns BEARD. 

